Christmas tree ornament



FIG. 1 is a front elevational view of a christmas tree ornament, showing my new design, the rear view being the same;

FIG. 2 is a side elevational view thereof, the opposite side being the same;

FIG. 3 is a top plan view thereof, and

FIG. 4 is a bottom plan view thereof. 

The ornamental design for a Christmas tree ornament, substantially as shown and described. 